Liquid spreading chemical and water box for use with a rotating roll



April 25, 1967' E. F. REYNOLDS ETAL 3,316,143

SPREADING CHEMICAL AND WATER BQX LIQUID FOR USE WITH A ROTATING ROLL 5 Sheets-$heet 1 Filed Oct. 21, 1964 April 25, 1967 E- F. REYNOLDS ETAL 3,316,143 LIQUID SPREADING CHEMICAL AND WATER BOX WITH A ROTATING ROLL 3 Sheets-Sheet 2 FOR USE Filed Oct. 21, 1964 Ap 1967 REYNOLDS ETAL F, 3,316,143 LI UID SPREADING CHEMICAL AND WATER BOX FOR USE WITH A ROTATING ROLL Filed Oct. 21, 1964 3 $heets-$heet 5 United States Patent C) 3,316,143 LIQUID SPREADING CHEMICAL AND WATER BOX FOR USE WITH A ROTATING ROLL Eugene F. Reynolds, Foxboro, and William Kleimola, East Walpole, Mass., assignors to Bird Machine Company,

South Walpole, Mass., a corporation of Massachusetts Filed Oct. 21, 1964, Ser. No. 405,396 13 Claims. (Cl. 162-232) This invention relates to liquid spreading chemical and water box apparatus designed to operate in conjuncwith a rotating roll, and more particularly to such apparatus in which a flexible apron cloth overhangs the box body in liquid spreading contact with the rotating roll.

One object of the invention is to provide in such apparatus a mounting arrangement for the box body allowing the angle of the box to the horizontal to be shifted through a wide range of values, thereby to adjust the head of liquid wetting the roll, without substantially disturbing the area of contact between the apron cloth and the roll. In the preferred embodiment of the invention this is accomplished by a mounting arrangement defining a box body pivot axis substantially coincident with the line of initial contact between the apron and the roll, thereby enabling a wide range of roll Wetting head adjustments while the roll machinery is in opera tion.

Another object is to mount the box body so that its edge adjacent the roll, along with the overhanging apron lip, easily retracts from the roll when contacted by wrap on the roll, thus avoiding jamming of paper or foreign objects. A further object is to provide means for retaining the box body in a retracted position, with said apron lip lifted away from the roll, while the apparatus is not in use.

Yet another object is to provide novel means for mounting a flexible apron cloth on the box body proper, to allow easy installation and adjustment without tools, as well as foolproof operation.

A still further object is to provide simple and effective means for regulating liquid depth in the box body.

Another object of the invention is the provision of end dams novelly mounted in the box body and susceptible of easy positional adjustment to vary the length of the liquid pool.

A further object is to provide for automatic complete box body drainage when the liquid input is shut off.

Further objects and advantages of the invention will become apparent upon the detailed description of a preferred embodiment thereof, including the drawings, in which; a

FIG. 1 is a plan view of the apparatus of the invention;

FIG. 2 is an elevation showing the back wall of the box body;

FIG. 3 is a section taken along 3-3 of FIG. 1;

FIG. 4 is a section similar to FIG. 3, but with the box body lifted away from the roll;

FIG. 5 is a section taken along 5-5 of FIG. 1; and

FIG. 6 is a section taken along 66 of FIG. 1.

Referring to the drawings, the apparatus comprises generally a main frame 20, end bearings 21 and 22 mounted on top of the frame, and a water box body 23 supported on the end bearings. Box body 23 has substantially perpendicular bottom and back wall portions 26 and 28, with the free forward edge 30 of portion 28 having an operative position adjacent, but spaced from (e.g. M5), the cylindrical surface (preferably the upper half of the surface) of rotating roll .18. Roll 18 is advantageously supported on the same frame 20 that supports the water box assembly.

As best shown in FIGS. l-3, box body 23 terminates at its ends, outward of the ends of roll 18, in vertical end walls 32, 33. These ends walls extend, in the direction of roll 18, beyond edge 30 of the bottom wall portion 2 8. Pivot pins 36, 37 extend laterally out from walls 32, 3'3 and are located forward (i.e., on the roll side) of edge 30, in order that the box body may be positioned with the common axis of the pivot pins substantially coincident with an element of the rolls cylindrical surface, while edge 30 is at the same time spaced from the roll surface.

The forward portions of end box supporting arms 40, 41, :arm has at its forward end an rearwardly extending slot 44, rest in slots 44, front of the box bearings 21 and 22 form respectively. Each said elongated, upwardly and 45. Pivot pins 36, 37 45 respectively, thereby supporting the and defining a pivot axis for the box.

The back of the box is supported on end bearings 21, 22 by means of adjusting screws 48, 49. In particular, blocks 52, '53 extend laterally outwardly from the back of end walls 32, 33, and the adjusting screws are threaded vertically through these blocks to contact upper surfaces of the end bearings 21, 22 (FIG. 2). In this manner, by appropriately turning the adjusting screws, and pivoting the entire box body about: pins 36, 37, the angle between bottom wall portion 28 and the horizontal may be controlled.

End bearings 21, 22 are slidingly mounted on frame 20 to slide above T-slots 110, 111, but can be locked in a given position by tightening square head bolts 1113, 114 which run in said slots. The forward. shifting of the end bearings is limited by stop washers 116a, 117, bolted into the T-slots in front of shoulders 120, 121 of the end beariangs. Similarly, the backward shifting of the bearings is limited by stop washers 116a, 117 and lugs 60, 61 located on arms 40, 41 just below slots 44, 45 extending laterally outwardly from arms 40, 41. By virtue of this arrangement, the entire box assembly including the end bearings can, by loosening bolts I113, 114, be shifted back and forth along the T-slots 110, 111, limited by the alternate abutment of shoulders 120, 121 and lugs 60, 6 1 against stop washers 116a, 1117.

Pins 36, 37 are long enough to extend laterally outwardly beyond arms 40, 41 (FIG. 1), and have attached to their ends oblong tilt legs 56, 57. Legs 56, 57 are mounted for rotation upon the pivot pins, being secured thereto by cotter pins 63. The legs are sized so that when they are turned with their longer dimension extending horizontally (FIG. 3) they clear lugs 60, 61 with the pivot pins resting at the bottom of slots 44, 45. On the other hand, when the legs are rotated to extend vertically, and the box body lifted at its front, the legs can be set on the lugs (FIG. 4) and will hold the box in a raised position, with the pins lifted off the bottom of the slots and the box edge 30 retracted from its operative position adjacent the roll.

Lugs 125, 126 are located on arms 40, 41 just behind slots 44, 45, and bolts 128, 129 (FIGS. 3, 4) are threaded into the front of these lugs to extend over slots 44, 45 and prevent complete removal of the pivot pins from the slots during normal use. Bolts 128, 129 can be removed (FIG. 1) for easy disassembly.

Mounted on the inner surface of bottom wall 26, about Vs of the way from edge 30 toward the back wall 28, is a stationary weir 70. Weir 70 has a base portion 70a running a short distance along wall 26, and has a front portion 71 extending perpendicularly upward from wall 26, with a rear portion 72 extending first straight down behind portion 71, then slanting downwardly and sway from portion 71 and terminating short of wall 26 with a lip 73 turned in at 45 to wall 26.

Apron cloth 78, itself of known rectangular strip design, is draped over the entire weir 79 to run along the bottom of the box on both sides of the weir. At the front of the box the apron cloth overhangs edge 30 to form an edge lip 80 which, when the box is in operative position, contacts, with its undersurface, roll 13 in liquid spreading relationship. In this manner the apron cloth forms a continuation of the floor of the box, and, under pressure of the liquid in the box, is conformed at the front of lip 80 to the configuration of the roll.

The apron is secured to the box at weir '70 by means of a series of spring clips 84 spaced along the length of the weir which fit resiliently over the weir and apron. The apron clips 84 are of U-shaped cross section with rolled ends, one of which fits in behind lip 73 of the weir, and are tightly secure on the weir, yet manually operable, so that the apron cloth is easily installed and easily adjusted to change the length of lip 80. A normal length for lip 86 might be /2"-%" in a box having a total length from roll to back wall of some 7".

End dams 90, 91 form sealed endwise boundaries for the liquid pool. Describing dam 9b as illustrative, it comprises parallel spaced side plates 92, 93 joined at their top along the front by front plate 94 and along their back by short horizontal plate 95. Plates 92, 93 have flat back edges, to fit tightly against weir portion 71, and generally flat but notched bottom edges to fit tightly against apron '78 as it lies on the fioor of the box, stepped up over the base 70a of weir 7b. The lower back corners of plates $2, 93 are cut away and joined by a narrow plate 96, to form a constant drain opening 97 across the end dam. When the liquid input is shut oif, drain 97, and a corresponding constant drain in end dam )1, will serve automatically to completely drain the box.

The lower front corners of plates 92, 93 are also cut away to provide substantial clearance Q8 between the metal portions of the end dam and the front of the apron and the roll. The cavity between plates 92, 93 is filled with greased mill material 99, which forms a tight seal against the apron and the weir, and fills space 9'5 to seal the ends of the pool against the roll. Plate 96 keeps the mill material out of constant drain 97.

A cross bar 130 runs between the upper rear portions of plates 92, 93, protruding laterally beyond the plates through holes 131, 132, and bending forwardly whereby the cross bar is secured. A generally L-shaped spring clip 135 with rolled ends 136, 137 secures the end dam to weir '70. Rolled end 136 attaches to cross bar 13%, and the spring clip extends rearwardly over the weir, then downwardly where rolled end 137 fits behind lip '73. Thus, as in the case of the apron, the end dams are securely held in their operative position, yet can easily be adjusted laterally or removed from the box. Spring clip 135 serves to resiliently hold the dam against weir portion '71 and the floor of the box, through the coaction of rolled end 137 and angled lip '71.

Air jet assemblies 140, 141 are located outside each end dam, and can be used to direct air blasts at the front edges of the dam to prevent liquid from flowing around the dams.

A liquid inlet main 1% runs along the top of back wall 28, fed at both ends through pipes 193, 104. From main N the liquid passes into a series of inlets 186, spaced along the length of the box between the spaced spring clips 84. Inlets 1% bend downwardly over weir 7b, with their openings 167 located well below the top of the weir and submerged in the pool 1% to minimize feed-created turbulence. Drains 115, 116 are located at the bottom of back wall 28 respectively below pipes 103, 104.

In operation of the device the box is located with its front adjacent the upper part of roll 18, with apron lip 8t forming part of the box floor as it extends generally horizontally forwardly to rest on the surface of the roll. Liquid is fed into the box, building up the pool to the height of weir 70. Excess liquid passes over the weir and is drained at 115, 116. The angle between bottom wall 26 and the horizontal governs the location of front edge 112 (FIG. 6) of the pool, and in turn the length of the roll wetting head H. By virtue of the box pivoting arrangement herein disclosed, head H may be adjusted while the apparatus is operating by simply turning the adjusting screws 48, 49 to vary the box angle, H increasing as the angle is decreased. Importantly, since the box pivot axis is substantially coincident with the line of initial contact between the apron and the roll (which is also the apron fiexure line), only the above described pivotal adjustment is needed to obtain any desired change in the head H, since the area of apron-to-r0ll contact is not disturbed during the adjustment.

While the preferred embodiment has been described in detail, variations within the scope and spirit of the invention will occur to those skilled in the art.

What is claimed is:

1. A liquid spreading chemical and water box device for use with a rotating roll, comprising a box body having a free forward edge,

an apron cloth carried by said box body with an edge lip extending beyond said free edge,

means for supporting said box body across said roll with said free edge adjacent the surface of said roll and the edge lip of 'said apron cloth in liquid spreading contact with said rotating roll across its surface, said means defining a pivot axis substantially coincident with the line of initial contact between said edge lip and roll, said box being mounted for pivotal movement about said pivot axis, whereby said box body can be pivoted to adjust the head of liquid against said roll without substantially shifting said line of initial contact,

and means for maintaining said box body in a desired pivotal position.

2. The apparatus of claim 1 wherein said means for supporting said box body include means for permitting said free edge to be moved away from its position adjacent said roll when contacted by material protruding from the surface of the rotating roll.

3. The device of claim porting said box body comprise a pair of supporting arms each having a slot directed away from the surface of said roll, and a pair of pivot pins mounted on said box body to rest respectively in said slots and thereby define said pivot axis, each of said slots being longer than the diameter of its corresponding pin, said box body being mounted for pivotal movement relative to said arms, whereby the free edge of said bottom wall portion may be moved away from its position adjacent said roll when contacted by material protruding from the surface of the rotating roll.

4. The apparatus of claim 2 further comprising means for holding said edge lip out of contact with the surface of said roll when said apparatus is not in use.

5. The apparatus of claim 3 further comprising at least one elongated member mounted on one of said pivot pins, and lug means located adjacent said elongated member, said lug being separate from said box body, said elongated member being mounted for rotation between a first position in which said pivot pins rest at the ends of said slots nearest the surface of said roll, and a second position in which said member contacts said lug means and said pivot pins are shifted along said slots in the direction away from the surface of said roll, said edge lip being lifted out of contact with the surface of said roll when said member is in said second position.

6. The apparatus of claim 1 wherein said box body has a stationary weir extending generally upwardly from said bottom wall portion, and at least one drain opening, said weir located between said drain opening and the free edge of said bottom wall portion, said weir thereby constituting means for regulating the depth of liquid in 1 wherein said means for sup-- said box at a predetermined depth, excess liquid passing over said weir and into said drain opening.

7. The apparatus of claim 6 wherein said apron passes over said stationary weir and is secured thereto by at least one manually operable resilient clip.

8. The apparatus of claim 6 further comprising at least one laterally adjustable end dam mounted in said box body against said weir and secured thereto by a manually operable resilient clip.

9. A liquid spreading chemical and water box device for use with a rotating roll, comprising a box body with generally perpendicular bottom and back wall portions, said bottom wall portion having a free forward edge,

an apron cloth carried by said box body with an edge lip extending beyond said free edge of said bottom wall portion,

means supporting said box body across said roll with the free edge of said bottom wall portion adjacent the surface of the upper half of said roll and the edge lip of said apron cloth in liquid spreading contact with said rotating roll across its said upper surface, said means defining a pivot axis substantially coincident with the line of initial contact between said edge lip and roll, said box being mounted for pivotal movement about said pivot axis, whereby said box body can be pivoted to adjust the head of liquid against said roll without substantially shifting said line of initial contact,

and means for maintaining said box body in a desired pivotal position.

10. A liquid spreading chemical and water box device for use with a rotating roll, comprising a box body having a free forward edge,

an apron cloth carried by said box body with an edge lip extending beyond said free edge,

means for supporting said box body across said roll with said free edge adjacent the surface of said roll and the edge lip of said apron cloth in liquid spreading contact with said rotating roll across its surface, said means comprising a pair of supporting arms each having a slot directed away from the surface of said roll and a pair of pivot pins mounted on said box body to rest respectively in said slots, thereby defending the pivot axis for said box, each of said slots being larger than the diameter of its corresponding pin, said box being mounted for pivotal movement relative to said arms and about said pivot axis, whereby said box body can be pivoted to adjust the head of liquid against said roll and the free edge of said bottom wall portion may be moved away from its position adjacent said roll when contacted by material protruding from the surface of said rotating roll,

and means for maintaining said box body in a desired pivotal position.

11. The apparatus of claim 10 further comprising at least one elongated member mounted on one of said pivot pins, and lug means located adjacent said elongated memher, said lug being separate from said box body, said tion away from the surface of said roll, lifted out of contact with the surface of said roll when said member is in said second position.

12. A liquid spreading chemical and water box device for use with a rotating roll, comprising a box body with a bottom wall portion having a free forward edge, an apron cloth carried by said box body with an edge lip extending beyond said free edge, means supporting said box body across said roll with said free edge adjacent the surface of said roll and the edge lip of said apron cloth in liquid spreading contact with said rotating roll across its surface, said means defining a pivot axis, said box being mounted for pivotal movement about said pivot axis, whereby said box body can be pivoted to adjust the head of liquid against said roll, means for maintaining said box body in a desired pivotal position, a stationary weir extending generally upwardly from said bottom wall portion, and at least one drain opening, said weir located between said drain opening and the forward edge of said box, said weir thereby constituting means for regulating the depth of liquid in said box at a predetermined depth, excess liquid passing over said weir into said drain opening, said apron. passing over said stationary weir and being secured thereto by at least one manually operable resilient clip. 13. A liquid spreading chemical and water box device for use with a rotating roll, comprising a box body having a free forward edge, an apron cloth carried by said box body with an edge lip extending beyond said free edge, means supporting said box body across said roll with said free edge adjacent the surface: of said roll and the edge lip of said apron cloth in said liquid spreading contact with said rotating roll across its surface, said means defining a pivot axis, said box being mounted for pivotal movement about said pivot axis, whereby said box body can be pivoted to adjust the head of liquid against said roll, means for maintaining said box body in a desired pivotal position, at least one end dam mounted in said box body to form an endwise boundary for liquid in said box, said end dam having a cutaway portion adjacent its bottom, said cutaway portion forming a constant drain for automatically completely draining said box body when liquid input is shut off.

No references cited.

DONALL H. SYLVESTER, Primary Examiner. J. H. NEWSOME, Assistant Examiner. 

1. A LIQUID SPREADING CHEMICAL AND WATER BOX DEVICE FOR USE WITH A ROTATING ROLL, COMPRISING A BOX BODY HAVING A FREE FORWARD EDGE, AN APRON CLOTH CARRIED BY SAID BOX BODY WITH AN EDGE LIP EXTENDING BEYOND SAID FREE EDGE, MEANS FOR SUPPORTING SAID BOX BODY ACROSS SAID ROLL WITH SAID FREE EDGE ADJACENT THE SURFACE OF SAID ROLL AND THE EDGE LIP OF SAID APRON CLOTH IN LIQUID SPREADING CONTACT WITH SAID ROTATING ROLL ACORSS ITS SURFACE, SAID MEANS DEFINING A PIVOT AXIS SUBSTANTIALLY COINCIDENT WITH THE LINE OF INITIAL CONTACT BETWEEN SAID EDGE LIP AND ROLL, SAID BOX BEING MOUNTED FOR PIVOTAL MOVEMENT ABOUT SAID PIVOT AXIS, WHEREBY SAID BOX BODY CAN BE PIVOTED TO ADJUST THE HEAD OF LIQUID AGAINST SAID ROLL WITHOUT SUBSTANTIALLY SHIFTING SAID LINE OF INITIAL CONTACT, AND MEANS FOR MAINTAINING SAID BOX BODY IN A DESIRED PIVOTAL POSITION. 